1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULUNDERWRITERS LABORATORIES INC. CERTIFICATION REQUIREMENT DECISIONThis Certification Requirement Decision is prepared and published by Underwriters Laboratories Inc.(UL). It is normative for the a
2、pplicable UL Product Certification Program(s); however, it is currently notpart of the UL Standard(s) referenced below.Product Category (CCN): FLCR, FLCR7Standard Number: UL 1029Edition Date: January 21, 2011Edition Number: 5Section / Paragraph Reference: 20.1Subject: Revision to Input Test to inclu
3、de input current limits during lamp startingand lamp out conditionsDECISION:Clause 20.1 revised to include the following exception:Exception: The current input shall not be more than 125% of the marked rating during lampstarting and lamp out conditions.RATIONALE FOR DECISION:Clause 20.1 requires bal
4、lasts to draw no more than 110% of their marked current rating in order tominimize the likelihood of tripping the branch circuit protection. The Standard does not specifyrequirements for current draw during transient conditions, such as lamp starting and lamp out. UL practicehas been to allow ballas
5、ts to draw up to 125% of their marked current rating during these transientoperating conditions which, due to their short-term nature, will not have an impact on (time-delayed)branch circuit protection devices or on the overall current-handling capacity of the wiring system. Addingthis exception to
6、clause 20.1 documents this practice.Copyright 2012 Underwriters Laboratories Inc.UL, in performing its functions in accordance with its objectives, does not guarantee or warrant thecorrectness of Certification Requirement Decisions it may issue or that they will be recognized or adoptedby anyone. Ce
7、rtification Requirement Decisions are the opinion of Underwriters Laboratories Inc. inpractically applying the requirements of the standard. They do not represent formal interpretations of thestandard under American National Standards Institute (ANSI) processes. UL shall not be responsible toanyone
8、for the use of or reliance upon Certification Requirement Decisions by anyone. UL shall not incurany obligation or liability for damages, including consequential damages, arising out of or in connectionwith the use or reliance upon Certification Requirement Decisions. The electronic version of theCe
9、rtification Requirement Decision is the current version and previously printed copies may be outdated.This document is published as a service to ULs certification customersUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULSTANDARD NUMBER: UL 1029 -2-No Text on This Page
